How to read csv file into datagridview that have header

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C#

VB

I have datagrid that have header already, so I want to populate inside the datatable without changing header

I'm using this method to import data from csv.

What I have tried:

Private Sub Open_Click(ByVal sender As Object, ByVal e As EventArgs)
    openFileDialog1.ShowDialog()
    txtFile.Text = openFileDialog1.FileName
    BindData(txtFile.Text)
End Sub

Private Sub BindData(ByVal filePath As String)
    Dim dt As DataTable = New DataTable()
    Dim lines As String() = System.IO.File.ReadAllLines(filePath)

    If lines.Length > 0 Then
        Dim firstLine As String = lines(0)
        Dim headerLabels As String() = firstLine.Split(","c)

        For Each headerWord As String In headerLabels
            dt.Columns.Add(New DataColumn(headerWord))
        Next

        For i As Integer = 1 To lines.Length - 1
            Dim dataWords As String() = lines(i).Split(","c)
            Dim dr As DataRow = dt.NewRow()
            Dim columnIndex As Integer = 0

            For Each headerWord As String In headerLabels
                dr(headerWord) = dataWords(Math.Min(System.Threading.Interlocked.Increment(columnIndex), columnIndex - 1))
            Next

            dt.Rows.Add(dr)
        Next
    End If

    If dt.Rows.Count > 0 Then
        dataGridView1.DataSource = dt
    End If
End Sub